EP2547734A1 - Peinture comprenant des minéraux rendus hydrophobes et procédés associés - Google Patents

Peinture comprenant des minéraux rendus hydrophobes et procédés associés

Info

Publication number
EP2547734A1
EP2547734A1 EP11756718A EP11756718A EP2547734A1 EP 2547734 A1 EP2547734 A1 EP 2547734A1 EP 11756718 A EP11756718 A EP 11756718A EP 11756718 A EP11756718 A EP 11756718A EP 2547734 A1 EP2547734 A1 EP 2547734A1
Authority
EP
European Patent Office
Prior art keywords
composition
mineral
hydrophobizing agent
calcium carbonate
kaolin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11756718A
Other languages
German (de)
English (en)
Other versions
EP2547734A4 (fr
Inventor
Stephen C. Raper
David A. Skelhorn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imerys Kaolin Inc
Original Assignee
Imerys Kaolin Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imerys Kaolin Inc filed Critical Imerys Kaolin Inc
Publication of EP2547734A1 publication Critical patent/EP2547734A1/fr
Publication of EP2547734A4 publication Critical patent/EP2547734A4/fr
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1022—Non-macromolecular compounds
    • C04B20/1025—Fats; Fatty oils; Ester type waxes; Higher fatty acids; Derivatives thereof
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    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/021—Calcium carbonates
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    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • C09C1/3063—Treatment with low-molecular organic compounds
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    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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    • C09C1/3081—Treatment with organo-silicon compounds
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    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3669—Treatment with low-molecular organic compounds
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    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C09C1/3684—Treatment with organo-silicon compounds
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    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40—Compounds of aluminium
    • C09C1/405—Compounds of aluminium containing combined silica, e.g. mica
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    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40—Compounds of aluminium
    • C09C1/42—Clays
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/006—Anti-reflective coatings
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C09D5/028—Pigments; Filters
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/62—L* (lightness axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/63—Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • C01P2006/64—Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)
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    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/65—Water proofers or repellants
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
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    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K9/04—Ingredients treated with organic substances
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    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
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    • C08K9/08—Ingredients agglomerated by treatment with a binding agent

Definitions

  • the present disclosure relates to paint including hydrophobized minerals and related methods.
  • the present disclosure relates to water-based paint including minerals that have been treated with one or more hydrophobizing agents, and related methods.
  • Paint typically includes one or more pigments, binders, and solvents.
  • Pigments typically include granular solids and/or minerals incorporated into the paint to contribute color, toughness, texture, and/or to act as an extender. Binders are film- forming components of paint, which impart adhesion, bind the pigments together, and may strongly influence properties such as, for example, gloss potential, exterior durability, flexibility, and toughness. Binders typically include synthetic or natural resins, such as, for example, polymers and copolymers based on acrylics, polyurethanes, polyesters, melamine resins, epoxies, and/or oils or other monomeric species. Solvents are considered to be the liquid(s) used in paint, which suspend the pigments and binders, and transport them from a paint applicator to a surface being painted.
  • abrasion resistance relates to the ability to clean a dry paint film without significantly altering the characteristics of the painted finish, for example, by eroding the surface of the dry paint film.
  • Stain resistance relates to the resistance of a dry paint film to be stained in a manner in which the stain cannot be cleaned from the film.
  • compositions for use in paint that improve scrub resistance and/or stain resistance of paint.
  • pigments for use in water-based paint that improve scrub resistance and/or stain resistance in a cost-effective manner.
  • a water-based paint composition may include at least one mineral treated with at least one hydrophobizing agent and at least one particulate TiO 2 pigment.
  • a film formed from the water-based paint composition may have a contrast ratio at least about 0.1% higher than a similar water-based paint composition wherein the at least one mineral treated with at least one hydrophobizing agent is replaced with an equal volume of said particulate Ti0 2 pigment.
  • Fig. 1 shows a side-by-side comparison of scrub test results for a water- based paint formulation including untreated calcium carbonate, and the water-based paint formulation including calcium carbonate treated with an exemplary hydrophobizing agent;
  • Fig. 2 shows a side-by-side comparison of scrub test results for a water- based paint formulation including untreated calcium carbonate, and the water-based paint formulation including calcium carbonate treated with the exemplary
  • Fig. 3 shows a side-by-side comparison of scrub test results for a water- based paint formulation including untreated calcined kaolin, and the water-based paint formulation including calcined kaolin composition treated with the exemplary
  • Fig. 4 shows a side-by-side comparison of scrub test results for a water- based paint formulation including an untreated calcined kaolin and calcium carbonate, and the water-based paint formulation including calcined kaolin and calcium carbonate compositions treated with the exemplary hydrophobizing agent, with both water-based paint formulations being cured at room temperature;
  • Fig. 5 shows a side-by-side comparison of scrub test results for a water- based paint formulation including untreated calcium carbonate, and the water-based paint formulation including calcium carbonate composition treated with the exemplary hydrophobizing agent, with both water-based paint formulations being cold-cured;
  • Fig. 6 shows a side-by-side comparison of scrub test results for a water- based paint formulation including untreated calcined kaolin, and the water-based paint formulation including calcined kaolin composition treated with the exemplary hydrophobizing agent, with both water-based paint formulations being cold-cured;
  • Fig. 7 shows a side-by-side comparison of scrub test results for a water- based paint formulation including untreated calcined kaolin and calcium carbonate, and the water-based paint formulation including calcined kaolin and calcium carbonate compositions, both treated with the exemplary hydrophobizing agent, with both water- based paint formulations being cold-cured.
  • Fig. 8 shows a side-by-side comparison of stain resistance test results for a water-based paint formulation including untreated calcined kaolin and calcium carbonate, and the water-based paint formulation including calcined kaolin and calcium carbonate compositions, both treated with the exemplary hydrophobizing agent, with both water-based paint formulations being cold-cured.
  • Fig. 9 is a graph of opacity vs. amount of ⁇ 2 content for several paint samples prepared with different pigments, including pigments comprising coated and uncoated calcium carbonate.
  • Fig. 10 a graph of opacity vs. amount of ⁇ 1 ⁇ 2 content for several paint samples prepared with different pigments, including pigments comprising coated calcium carbonate and pigments comprising uncoated hydrous kaolin.
  • Fig. 11 a graph of tint strength vs. amount of Ti0 2 content for several paint samples prepared with different pigments.
  • Fig. 12 shows scrub test results for paint samples comprising different pigments.
  • Fig. 13 is a graph of contrast ratio vs. Ti0 2 replacement level for several paint formulations.
  • Fig. 14 is a graph of contrast ratio vs. Ti0 2 level for pigments including untreated and treated ground calcium carbonate.
  • the disclosure relates to paint, including at least one mineral treated with a hydrophobizing agent.
  • the paint may include water- based paint, and the at least one mineral may include at least one of clay, kaolin, mica, and calcium carbonate.
  • the paint may be latex paint, and the at least one mineral may include kaolin, such as, for example, at least one of hydrous kaolin and calcined kaolin.
  • the at least one mineral may include calcium carbonate, such as, for example, at least one of granulated calcium carbonate (GCC) and precipitated calcium carbonate (PCC).
  • GCC granulated calcium carbonate
  • PCC precipitated calcium carbonate
  • the at least one hydrophobizing agent may include at least one of fatty acids, fatty amines, and silanes.
  • fatty acids may include one or more of aliphatic carboxylic acids having from ten to thirty carbon atoms in their chain, including but not limited to, stearic acid, behenic acid, palmitic acid, arachidic acid, montanic acid, capric acid, lauric acid, myristic acid, isostearic acid, cerotic acid, and mixtures thereof.
  • the at least one hydrophobizing agent may include fatty acid, such as, for example, stearic acid.
  • the at least one hydrophobizing agent may include a fatty amine, such as, for example, a fatty amine carbohydrate complex.
  • treating minerals for use in water-based paint with hydrophobizing agents may result in improved scrub resistance and/or stain resistance of the dry paint film.
  • Conventional wisdom would suggest that treating minerals for use in water-based paints with hydrophobizing agents would lead to unacceptable results because, for example, the treated minerals would be hydrophobic and would thus not be compatible with the water solvent of water-based paint.
  • some minerals treated with hydrophobizing agents float on top of water-based paint, thus leading one to believe that including the treated minerals in water-based paints would lead to undesirable characteristics.
  • treating minerals for use in water-based paint with hydrophobizing agents may result in improved scrub resistance and/or stain resistance of the dry paint film.
  • Conventional wisdom would suggest that treating minerals for use in water-based paints with hydrophobizing agents would lead to unacceptable results because, for example, the treated minerals would be hydrophobic and would thus not be compatible with the water solvent of water-based paint.
  • some minerals treated with hydrophobizing agents float on top of water-based paint, thus leading one to believe that
  • the minerals may include kaolin, for example, a calcined kaolin having a mean particle size (dso) of about 1.5 microns, such as a calcined kaolin product marketed under the trademark GLOMAX LL by IMERYS.
  • the minerals may include calcium carbonate, for example, a ground calcium carbonate product marketed under the trademark
  • Ground calcium carbonate may include ground, naturally occurring calcium carbonate from limestone sources, such as, for example, marble, limestone, dolomite, chalk, and "reef limestone".
  • the minerals may include precipitated calcium carbonate.
  • Precipitated calcium carbonate may be generally prepared by a process in which calcium carbonate is calcined to produce calcium oxide, or "quicklime.” The quicklime is thereafter "slaked” with water to produce an aqueous slurry of calcium hydroxide, and finally, the calcium hydroxide is carbonated with a carbon-dioxide-containing gas to produce precipitated calcium carbonate, which may be subsequently processed by further grinding and drying to produce a dry powder form.
  • Number 10 WHITE also known as #10 WHITE, is an example of a white, ground calcium carbonate from a marble source with an average particle size of 12 microns and 325 mesh residue of approximately 0.5%.
  • GLOMAX LL is an example of a conventional white calcined clay with an average particle size, by Sedigraph method, of 1.4 microns.
  • other calcined clays may also be used, for example, calcined clays manufactured by either soak- calcination or flash calcination at temperatures above 600 degrees Celsius with average particle sizes from 0.2 microns to 15 microns, such as for example from 0.6 microns to 5.0 microns, and with oil absorptions from 40 g/100 g to 135 g/100 g by spatula rub-out method.
  • dry paint film produced from the exemplary paints disclosed herein may exhibit specified properties of color.
  • components L, a, and b are color component values of a 3-dimensional color space scale, which may be measured by, for example, a Hunter Ultrascan XE
  • Whiteness can be measured according to the ASTM-E-313 standard method. It is to be appreciated that the relative color of paint can be “lighter” (e.g., appearing less blue) or “darker” (e.g., appearing more blue). In the case of tint strength, "lighter” colored paint (i.e., paint having a higher L value) is considered to have the higher tint strength after addition of a darker pigment.
  • 457 brightness Another optical property of dry paint film is referred to as "457 brightness,” which can be measured using a standard method, such as, for example, by using ASTM D 985-97.
  • the 457 brightness property is a measure of the directional reflectance of a surface at a wavelength of 457 nanometers.
  • opacity also known as contrast ratio. Dry paint film opacity is related to light scattering and light absorption, which may occur when light travels through two or more different materials, as different materials typically have different refractive indices. In a pigmented paint, light may be scattered by both the pigment and extender, as well as cavities or voids and may also be absorbed by the pigment system. Thus, to maximize opacity, it is generally desirable to maximize light scattering by the pigment/extender and voids or cavities and/or by absorption of light by absorbent species.
  • PVC concentration
  • Samples of the mineral were hydrophobized where indicated, by coating the dry mineral with hydrophobizing agent by blending in a Waring blender. Prior to addition to the blender, the hydrophobizing agent was heated to a temperature in excess of its melting point (e.g., 95 degrees C).
  • a first water-based paint formulation (Sample 1) was prepared by incorporating untreated ground calcium carbonate (#10 White), and untreated calcined kaolin (GLOMAX LL), into a standard 65% PVC formulation shown below in Table I.
  • a second water-based paint formulation (Sample 2) was prepared that was the same as the first paint formulation of this example, except that the calcium carbonate composition was hydrophobized by treating it with 2.5% by weigh in comparison to the mineral of the hydrophobizing agent.
  • the hydrophobizing agent used was a fatty amine carboxylate complex (RAYBO 57
  • Optisperse HS available from Raybo Chemical Company, Huntington WV, US).
  • the hydrophobizing agent was reacted with the calcium carbonate while mixing at a temperature above 70 degrees Celsius in order to melt the fatty amine carboxylate complex and to cause it to coat surfaces of the calcium carbonate particles.
  • the ratio of hydrophobizing agent-to-calcium carbonate can be adjusted based on the surface area of the calcium carbonate. However, it is ⁇ desirable to achieve monolayer coverage of the surface, although lower or higher addition levels may be satisfactory.
  • this ratio can be between 0.2-to-99.8 and 4.0-to-96.0, and is more typically 1.0-to-99.0.
  • Table I below provides a listing of the components of the exemplary paint formulations of Example 1. The following list is a legend for the abbreviations listed in Table I:
  • KTPP potassium tripolyphosphate
  • TAMOL 731 is a surfactant or wetting agent, which includes a sodium salt of polycarboxylated condensed naphthalene, which may be available from Rohm and Haas Company.
  • IGEPAL CO-610 is an Ethoxylated Nonyl Phenol, which may be available from Rhodia, Inc.
  • COLLOIDS 681 F (now Rhodoline 681 F) is a liquid defoamer, which may be available from Rhodia, Inc.
  • TiO 2 (R-706) is a rutile titanium oxide pigment, which may be available from DuPont.
  • #10 WHITE is a ground calcium carbonate product available from
  • GLOMAX LL is a calcined kaolin product available from IMERYS.
  • NATROSOL PLUS is a hydrophobically-modified hydroxyethylcellulose (HMHEC) thickener, which may be available from Hercules Inc.
  • HHEC hydrophobically-modified hydroxyethylcellulose
  • UCAR 379 is a Latex Vinyl Acrylic copolymer, which may be available from The Dow Chemical Company.
  • TEXANOL is an ester alcohol-based coalescent, which may be available from Eastman Kodak Company.
  • the chemical formula for TEXANOL is 2,2,4-trimethyl- 1 ,3-pentanediol monoisobutyrate.
  • Wl is Whiteness Index according to ASTM E313 (2/C) and Yl is
  • a scrub test was performed on both to determine whether one of the two formulations had a higher scrub resistance.
  • the scrub test used is described in ASTM D2486 Method B, which describes a method for side by side comparison of the abrasion resistance of two paint films, which are prepared simultaneously on the same test sheet.
  • a coating of paint having a predetermined thickness is applied to a sample card having a surface color that contrasts with the color of the applied paint sample.
  • the paint is allowed to dry and may be cured under predetermined conditions, such that a dry paint film of the paint sample is obtained.
  • An abrasive material is rubbed across the dry paint film using a reciprocating brush according to controlled procedures.
  • the amount of the surface of the sample card showing through the dry paint film following the rubbing of the abrasive material provides an indication of the scrub resistance of the paint being tested.
  • a paint that reveals less of the surface of the sample card than another paint to which the first paint is being compared has a greater scrub resistance.
  • the sample card showing less of the darker color i.e., the color of the surface of the sample card prior to application of the paint sample
  • Fig. 1 shows a side-by-side comparison of scrub test results for the first paint formulation of Example 1 on the left and for the second paint formulation on the right.
  • the second paint formulation in particular, the paint formulation which included the calcium carbonate treated with the exemplary
  • a first water-based paint formulation was prepared by incorporating untreated calcium carbonate into the low volatile organic content (VOC) 65% PVC formulation shown below in Table III.
  • a second water-based paint formulation was prepared that was the same as the first paint formulation of this example, except that the calcium carbonate was treated with Raybo 57 hydrophobizing agent prior to incorporation into the paint composition. Both the first and the second paint formulations were cured at room temperature.
  • Fig. 2 shows a side-by-side comparison of scrub test results for the first paint formulation of this example on the left and for the second paint formulation on the right.
  • the second paint formulation including the calcium carbonate mineral treated with the exemplary hydrophobizing agent, exhibits improved scrub resistance.
  • Example 3
  • Fig. 3 shows a side-by-side comparison of scrub test results for the first paint formulation of this example on the left and for the second paint formulation on the right.
  • the second paint formulation including the calcined kaolin composition treated with the exemplary hydrophobizing agent, exhibits improved scrub resistance.
  • a first water-based paint formulation was prepared by incorporating untreated calcined kaolin and untreated calcium carbonate into the low VOC 65% PVC formulation shown in Table III.
  • a second water-based paint formulation was prepared that was the same as the first paint formulation of this example, except that the calcined kaolin and calcium carbonate compositions were treated with
  • Fig. 4 shows a side-by-side comparison of scrub test results for the first paint formulation of this example on the left and for the second paint formulation on the right.
  • the second paint formulation including the minerals treated with the exemplary hydrophobizing agent, exhibits improved scrub resistance.
  • a first water-based paint formulation was prepared by incorporating untreated calcium carbonate into the low VOC 65% PVC formulation shown in Table III.
  • the low VOC formulation uses a commercially available latex polymer, which does not require the use of coalescent agents.
  • a second water-based paint formulation was prepared that was the same as the first paint formulation of this example, except that the calcium carbonate composition was treated with Raybo 57 hydrophobizing agent prior to incorporation into the paint formulation, such that the calcium carbonate particles of the calcium carbonate composition were coated with hydrophobizing agent. Both the first and the second paint formulations were cold-cured. Cold curing was undertaken by placing the freshly prepared paint film in an
  • Fig. 5 shows a side-by-side comparison of scrub test results for the first paint formulation of this example on the left and for the second paint formulation on the right.
  • the second paint formulation including the mineral treated with the exemplary hydrophobizing agent, exhibits improved scrub resistance.
  • a first water-based paint formulation was prepared by incorporating untreated calcined kaolin into the low VOC 65% PVC formulation shown in Table III.
  • a second water-based paint formulation was prepared that was the same as the first paint formulation of this example, except that the calcined kaolin composition was treated with Raybo 57 hydrophobizing agent prior to incorporation into the paint formulation. Both the first and the second paint formulations were cold-cured.
  • Fig. 6 shows a side-by-side comparison of scrub test results for the first paint formulation of this example on the left and for the second paint formulation on the right.
  • the second paint formulation including the mineral treated with the exemplary hydrophobizing agent, exhibits improved scrub resistance.
  • a first water-based paint formulation was prepared by incorporating untreated calcined kaolin and untreated calcium carbonate into the low VOC 65% PVC formulation shown in Table III.
  • a second water-based paint formulation was prepared that was the same as the first paint formulation of this example, except that the calcined kaolin and calcium carbonate compositions were treated with
  • treating minerals such as kaolin and calcium carbonate with a hydrophobizing agent results in improved scrub resistance for water- based paints.
  • Both the treated calcium carbonate minerals and the treated calcined kaolin minerals exhibited improved scrub resistance relative to corresponding untreated minerals.
  • treated minerals improved scrub resistance, regardless of the method of curing the paint.
  • rendering the minerals hydrophobic by such treatment would not be expected to provide acceptable results with water-based paints, the test results indicate that incorporating hydrophobic minerals into water-based paint results in improved scrub resistance.
  • Table IV shows that there is very little change in the properties of the dry paint film shown in Table IV for the formulations that do not include minerals treated with a hydrophobizing agent, relative to the formulations that include minerals treated with a hydrophobizing agent. However, as explained above, the treated formulations exhibit improved scrub resistance.
  • a first water-based paint formulation was prepared by incorporating untreated calcined kaolin and untreated calcium carbonate into the low VOC 65% PVC formulation shown in Table III.
  • a second water-based paint formulation was prepared that was the same as the first paint formulation of this example, except that the calcined kaolin and calcium carbonate compositions were treated with 2.5% by weight Raybo 57 hydrophobizing agent prior to incorporation into the paint formulation. Both the first and the second paint formulations were cold-cured at 9 degrees Celsius.
  • stain resistance test was performed on both to determine whether one of the two formulations had a higher stain resistance.
  • a coating of paint approximately 3 mils thick is applied to a sample card having a surface color that contrasts with the color of the applied paint sample.
  • the paint is allowed to dry for at least 24 hours to obtain a dry paint film of the paint sample.
  • Various staining agents i.e., oil, mustard, red wine, and ink
  • Fig. 8 shows a side-by-side comparison of stain resistance test results for the first paint formulation of this example on the left and for the second paint
  • the stains are corn oil, red wine, mustard, red wine (1 hr contact time), and ink (Special Test Compound S68 available from K&N Corp.).
  • the second paint formulation including the minerals treated with the exemplary hydrophobizing agent, exhibits markedly improved stain resistance for oil and ink stains, and appears comparable to slightly better than formulations using the untreated minerals for the wine and mustard stains.
  • Paint samples were prepared using the general formulation shown in Table V, but with different pigments.
  • a control sample was prepared using ⁇ 1 ⁇ 2 as the only pigment.
  • the Ti0 2 was reduced in steps from 202 to 65 pounds per 100 gallons and replaced by volume by either a 1 micron stearate coated calcium carbonate (Camel-Cal ST, available from Imerys), a 0.7 micron stearate coated calcium carbonate (Imerseal 75, available from Imerys), and a 1 micron uncoated Calcium carbonate.
  • the opacity obtained by replacing Ti0 2 with the 1 micron stearate coated carbonate or the 0.7 micron calcium carbonate is similar to that obtained by replacing Ti0 2 with either of the premium hydrous kaolins.
  • the paints prepared using stearate coated calcium carbonate show less of a decrease in tint strength than those using either of the premium hydrous kaolins as a TiO 2 replacement.
  • a series of paint formulations were made as shown in Table VIII using varying amounts of Ti0 2 , and replacement pigments (to constant volume) including an uncoated 1 microns calcium carbonate (Camel-Cal ST), a hydrophobic, coated calcium carbonate (Imerseal 75) or two fine hydrous kaolin controls (0.25 micron kaolin (Polygloss 90, available from Kamin) and 0.18 micron hydrous kaolin (ASP G90, available from BASF/Engelhard).

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Abstract

L'invention concerne une composition aqueuse de peinture qui peut comprendre au moins un minéral traité avec au moins un agent d'hydrophobisation. Ledit ou lesdits minéraux peuvent inclure au moins un élément parmi l'argile, le kaolin, le mica, le dioxyde de titane, le talc, la silice ou les silicates naturels ou synthétiques, les feldspaths, la syénite néphélinique, la wollastonite, la diatomite, la barytine, le verre et le carbonate de calcium. Ledit ou lesdits agents d'hydrophobisation peuvent inclure au moins un élément parmi les acides gras, les amines grasses et les silanes. L'invention concerne également un procédé de fabrication d'une peinture aqueuse qui peut consister à traiter au moins un minéral avec un agent d'hydrophobisation, et combiner ledit ou lesdits minéraux avec un liant.
EP11756718.0A 2010-03-17 2011-03-03 Peinture comprenant des minéraux rendus hydrophobes et procédés associés Withdrawn EP2547734A4 (fr)

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US31495910P 2010-03-17 2010-03-17
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US9346964B2 (en) 2010-03-17 2016-05-24 Imerys Kaolin, Inc. Paint comprising hydrophobized minerals and related methods
UY33917A (es) * 2011-02-23 2012-09-28 Omya Development Ag ?composiciones para recubrimiento que comprenden submicropartículas que comprenden carbonato de calcio, proceso para prepararlas, y uso de las submicropartículas?.
JP5997602B2 (ja) * 2012-12-21 2016-09-28 白石工業株式会社 ゴム組成物
US9637864B2 (en) 2013-04-26 2017-05-02 Pacific Nano Products, Inc. Fibrous structured amorphous silica including precipitated calcium carbonate, compositions of matter made therewith, and methods of use thereof
US20180187021A1 (en) * 2014-03-14 2018-07-05 Imerys Pigments, Inc. Agglomerated mineral composites
CN104100063B (zh) * 2014-07-11 2016-08-17 浙江泰基涂料有限公司 大理石贴面石及其制作方法
CN104100064B (zh) * 2014-07-11 2016-08-24 浙江泰基涂料有限公司 幻彩金属贴面石
JP6818683B2 (ja) * 2015-01-20 2021-01-20 ザ ケマーズ カンパニー エフシー リミテッド ライアビリティ カンパニー 表面疎水性無機粒子を含む水性耐食性コーティング
WO2016176134A1 (fr) 2015-04-27 2016-11-03 Imerys Pigments, Inc. Compositions comprenant des mélanges de matière particulaire inorganique hydrophobe et non hydrophobe destinées à être utilisées dans des produits de recouvrement
US20170362477A1 (en) * 2016-06-17 2017-12-21 United States Gypsum Company Construction adhesive compositions
US20190352518A1 (en) * 2018-05-16 2019-11-21 Burgess Pigment Company Silane treated anhydrous kaolin and other minerals
CN109181396A (zh) * 2018-07-13 2019-01-11 安徽康瑞高科新材料技术工程有限公司 一种改性水性涂料分散剂的制备方法
CN111635560A (zh) * 2020-06-23 2020-09-08 深圳市德立新材料科技有限公司 一种用于光学级pmma改性的纳米霞石粉的制备方法
CN114634720A (zh) * 2022-02-25 2022-06-17 泉州市旭丰粉体原料有限公司 一种亲水基活性钙的制备方法及应用

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See also references of WO2011115755A1

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US20130000518A1 (en) 2013-01-03

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